whirnot
Basic Member
Posts:186
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| 06 Aug 2012 03:32 PM |
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In order to be more space efficient, my Architect is proposing we put the mechanical room on the second floor. I am planning a GSHP but have no experiance with one. I notice the Manufacturer recommends they be placed and a Vibration isolating pad, except for the bottom discharge units. I have to assume there is a significant amount of vibration/ noise in the unit to need this.
Am I looking for trouble placing it on the second floor? If not should I use a rear or top discharge so it may be placed on a pad? |
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engineer
Veteran Member
Posts:2749
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| 06 Aug 2012 09:06 PM |
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I would strive to avoid locating a compressor in a second floor mech room - vibration isolation pads can only do so much, and harmonic frequencies of floors and walls are difficult to predict.
There is no problem putting an air handler upstairs. Consider a split system if necessary - locate the compressor section (a cube roughly 2x2x2) somewhere noise and vibration won't be a concern |
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Curt Kinder <br><br>
The truth is incontrovertible. Malice may attack it, ignorance may deride it, but in the end, there it is - Winston Churchill <br><br><a href="http://www.greenersolutionsair.com">www.greenersolutionsair.com</a>
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Bill Neukranz
Veteran Member
Posts:1103
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| 06 Aug 2012 10:56 PM |
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My two WaterFurnace 3 and 5 ton 2 stage variable speed geothermal units are suspended above the attic floor, hanging from the roof rafters. No compressor vibration noise at all.
Best regards,
Bill |
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Energy reduction & monitoring</br>
American Energy Efficiencies, Inc - Dallas, TX <A
href="http://www.americaneei.com">
(www.americaneei.com)</A></br>
Example monitoring system: <A href="http://www.welserver.com/WEL0043"> www.welserver.com/WEL0043</A>
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engineer
Veteran Member
Posts:2749
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| 06 Aug 2012 11:12 PM |
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Fair point.
The rafters' separation from rooms ceilings and walls or the hangers themselves may serve to isolate compressor vibration from occupied spaces, but I'd be reluctant to bet on that favorable outcome if I could possibly avoid rolling those dice in the first place. |
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Curt Kinder <br><br>
The truth is incontrovertible. Malice may attack it, ignorance may deride it, but in the end, there it is - Winston Churchill <br><br><a href="http://www.greenersolutionsair.com">www.greenersolutionsair.com</a>
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Bill Neukranz
Veteran Member
Posts:1103
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| 06 Aug 2012 11:30 PM |
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I think it's due to the pitch of the roof. The four each steel rods are at least 20 feet that are suspending the Envision units a couple feet above the attic floor. I think the rods are absorbing the vibrations. Bill |
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Energy reduction & monitoring</br>
American Energy Efficiencies, Inc - Dallas, TX <A
href="http://www.americaneei.com">
(www.americaneei.com)</A></br>
Example monitoring system: <A href="http://www.welserver.com/WEL0043"> www.welserver.com/WEL0043</A>
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engineer
Veteran Member
Posts:2749
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| 07 Aug 2012 08:26 AM |
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That's a heckuva attic! |
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Curt Kinder <br><br>
The truth is incontrovertible. Malice may attack it, ignorance may deride it, but in the end, there it is - Winston Churchill <br><br><a href="http://www.greenersolutionsair.com">www.greenersolutionsair.com</a>
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ChrisJ
Basic Member
Posts:277
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| 07 Aug 2012 01:12 PM |
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Bill,
Sent you a PM
ChrisJ |
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whirnot
Basic Member
Posts:186
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| 07 Aug 2012 03:39 PM |
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Posted By Bill Neukranz on 06 Aug 2012 10:56 PM
My two WaterFurnace 3 and 5 ton 2 stage variable speed geothermal units are suspended above the attic floor, hanging from the roof rafters. No compressor vibration noise at all.
Best regards,
Bill If the location proves to be advantageous for other reasons, that is an option to consider. I have used threaded rod with Vibration isolators with high vibration equipment in the past, and they were very effective. More so than surface mount. |
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Bill Neukranz
Veteran Member
Posts:1103
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| 08 Aug 2012 12:22 AM |
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Here's an image showing the suspension . Envision unit is sitting on two 4x4 cedar blocks inside a water pan. Water pan is suspended about two feet above attic floor via 4 threaded steel rods connected to roof rafters. Each rod is about 20 feet. Best regards, Bill |
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Energy reduction & monitoring</br>
American Energy Efficiencies, Inc - Dallas, TX <A
href="http://www.americaneei.com">
(www.americaneei.com)</A></br>
Example monitoring system: <A href="http://www.welserver.com/WEL0043"> www.welserver.com/WEL0043</A>
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Bill Neukranz
Veteran Member
Posts:1103
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ChrisJ
Basic Member
Posts:277
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| 08 Aug 2012 09:31 AM |
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Bill,
The pbase gallery is what I had seen before, thought it would be useful for whirnot.
Thanks for all the links, ChrisJ |
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joe.ami
Veteran Member
Posts:4377
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| 08 Aug 2012 09:33 AM |
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It depends on the attic, but our last situation had a unit behind a knee wall that barely fit to begin with and I think all wished it had been a split system at the end of the day.
j |
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Joe Hardin
www.amicontracting.com
We Dig Comfort!
www.doityourselfgeothermal.com
Dig Your Own Comfort! |
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jonr
Senior Member
Posts:5341
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| 08 Aug 2012 10:57 AM |
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And Joe breaks the record for the number of repeated postings! (now edited out). |
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joe.ami
Veteran Member
Posts:4377
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| 08 Aug 2012 11:14 AM |
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Posted By jonr on 08 Aug 2012 10:57 AM
And Joe breaks the record for the number of repeated postings!
It's been a long road. I'm just happy to bring another gold medal home to the US!  |
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Joe Hardin
www.amicontracting.com
We Dig Comfort!
www.doityourselfgeothermal.com
Dig Your Own Comfort! |
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whirnot
Basic Member
Posts:186
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